/*
 * Copyright (c) 2020, yifengling0. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. No personal names or organizations' names associated with the
 *    Atomthreads project may be used to endorse or promote products
 *    derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE ATOMTHREADS PROJECT AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */


#ifndef _SPIH_
#define _SPIH_

#ifdef __cplusplus
extern "C" {
#endif

#define SPI_LSB_FIRST (0x80)
#define SPI_MSB_FIRST (0x00)

#include "iosdrv.h"

    typedef struct SpiBase SpiBase;
    typedef int (*FSpiTransfer)(SpiBase *dev, const void *send_buf, void *recv_buf, size_t length);

    struct SpiBase {
        IOSDrv super;
        struct {
            int mode;
            int dataLines;
            int bitWidth;
            int cpol;
            int cpha;
            uint32_t freq;
            FSpiTransfer SpiTransfer;
        }Protected;
    };

    extern void SpiCreate(SpiBase* sio, const char *name, int mode, int cpol, int cpha, int dataLines, int bitwidth , uint32_t freq, FSpiTransfer xfer);
    int SpiTransfer(FD fd, const void* send_buf, void* recv_buf, size_t length);

#ifdef __cplusplus
}
#endif

#endif  /* sioh */